include/coff/internal.h

   1 /* Internal format of COFF object file data structures, for GNU BFD.
   2    This file is part of BFD, the Binary File Descriptor library.
   3
   4    Copyright 1999, 2000, 2001, 2002, 2003, 2004. 2005, 2006, 2007
   5    Free Software Foundation, Inc.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  20
  21 #ifndef GNU_COFF_INTERNAL_H
  22 #define GNU_COFF_INTERNAL_H 1
  23
  24 /* First, make "signed char" work, even on old compilers. */
  25 #ifndef signed
  26 #ifndef __STDC__
  27 #define signed                  /**/
  28 #endif
  29 #endif
  30
  31 /********************** FILE HEADER **********************/
  32
  33 /* extra stuff in a PE header. */
  34
  35 struct internal_extra_pe_filehdr
  36 {
  37   /* DOS header data follows for PE stuff */
  38   unsigned short e_magic;       /* Magic number, 0x5a4d */
  39   unsigned short e_cblp;        /* Bytes on last page of file, 0x90 */
  40   unsigned short e_cp;          /* Pages in file, 0x3 */
  41   unsigned short e_crlc;        /* Relocations, 0x0 */
  42   unsigned short e_cparhdr;     /* Size of header in paragraphs, 0x4 */
  43   unsigned short e_minalloc;    /* Minimum extra paragraphs needed, 0x0 */
  44   unsigned short e_maxalloc;    /* Maximum extra paragraphs needed, 0xFFFF */
  45   unsigned short e_ss;          /* Initial (relative) SS value, 0x0 */
  46   unsigned short e_sp;          /* Initial SP value, 0xb8 */
  47   unsigned short e_csum;        /* Checksum, 0x0 */
  48   unsigned short e_ip;          /* Initial IP value, 0x0 */
  49   unsigned short e_cs;          /* Initial (relative) CS value, 0x0 */
  50   unsigned short e_lfarlc;      /* File address of relocation table, 0x40 */
  51   unsigned short e_ovno;        /* Overlay number, 0x0 */
  52   unsigned short e_res[4];      /* Reserved words, all 0x0 */
  53   unsigned short e_oemid;       /* OEM identifier (for e_oeminfo), 0x0 */
  54   unsigned short e_oeminfo;     /* OEM information; e_oemid specific, 0x0 */
  55   unsigned short e_res2[10];    /* Reserved words, all 0x0 */
  56   bfd_vma  e_lfanew;            /* File address of new exe header, 0x80 */
  57   unsigned long dos_message[16]; /* text which always follows dos header */
  58   bfd_vma  nt_signature;        /* required NT signature, 0x4550 */
  59 };
  60
  61 struct internal_filehdr
  62 {
  63   struct internal_extra_pe_filehdr pe;
  64
  65   /* Standard coff internal info.  */
  66   unsigned short f_magic;       /* magic number                 */
  67   unsigned short f_nscns;       /* number of sections           */
  68   long f_timdat;                /* time & date stamp            */
  69   bfd_vma f_symptr;             /* file pointer to symtab       */
  70   long f_nsyms;                 /* number of symtab entries     */
  71   unsigned short f_opthdr;      /* sizeof(optional hdr)         */
  72   unsigned short f_flags;       /* flags                        */
  73   unsigned short f_target_id;   /* (TI COFF specific)           */
  74 };
  75
  76
  77 /* Bits for f_flags:
  78         F_RELFLG        relocation info stripped from file
  79         F_EXEC          file is executable (no unresolved external references)
  80         F_LNNO          line numbers stripped from file
  81         F_LSYMS         local symbols stripped from file
  82         F_AR16WR        file is 16-bit little-endian
  83         F_AR32WR        file is 32-bit little-endian
  84         F_AR32W         file is 32-bit big-endian
  85         F_DYNLOAD       rs/6000 aix: dynamically loadable w/imports & exports
  86         F_SHROBJ        rs/6000 aix: file is a shared object
  87         F_DLL           PE format DLL.  */
  88
  89 #define F_RELFLG        (0x0001)
  90 #define F_EXEC          (0x0002)
  91 #define F_LNNO          (0x0004)
  92 #define F_LSYMS         (0x0008)
  93 #define F_AR16WR        (0x0080)
  94 #define F_AR32WR        (0x0100)
  95 #define F_AR32W         (0x0200)
  96 #define F_DYNLOAD       (0x1000)
  97 #define F_SHROBJ        (0x2000)
  98 #define F_DLL           (0x2000)
  99
 100 /* Extra structure which is used in the optional header.  */
 101 typedef struct _IMAGE_DATA_DIRECTORY
 102 {
 103   bfd_vma VirtualAddress;
 104   long    Size;
 105 }  IMAGE_DATA_DIRECTORY;
 106 #define PE_EXPORT_TABLE                 0
 107 #define PE_IMPORT_TABLE                 1
 108 #define PE_RESOURCE_TABLE               2
 109 #define PE_EXCEPTION_TABLE              3
 110 #define PE_CERTIFICATE_TABLE            4
 111 #define PE_BASE_RELOCATION_TABLE        5
 112 #define PE_DEBUG_DATA                   6
 113 #define PE_ARCHITECTURE                 7
 114 #define PE_GLOBAL_PTR                   8
 115 #define PE_TLS_TABLE                    9
 116 #define PE_LOAD_CONFIG_TABLE            10
 117 #define PE_BOUND_IMPORT_TABLE           11
 118 #define PE_IMPORT_ADDRESS_TABLE         12
 119 #define PE_DELAY_IMPORT_DESCRIPTOR      13
 120 #define PE_CLR_RUNTIME_HEADER           14
 121 /* DataDirectory[15] is currently reserved, so no define. */
 122 #define IMAGE_NUMBEROF_DIRECTORY_ENTRIES  16
 123
 124 /* Default image base for NT.  */
 125 #define NT_EXE_IMAGE_BASE 0x400000
 126 #define NT_DLL_IMAGE_BASE 0x10000000
 127
 128 /* Default image base for BeOS. */
 129 #define BEOS_EXE_IMAGE_BASE 0x80000000
 130 #define BEOS_DLL_IMAGE_BASE 0x10000000
 131
 132 /* Extra stuff in a PE aouthdr */
 133
 134 #define PE_DEF_SECTION_ALIGNMENT 0x1000
 135 #ifndef PE_DEF_FILE_ALIGNMENT
 136 # define PE_DEF_FILE_ALIGNMENT 0x200
 137 #endif
 138
 139 struct internal_extra_pe_aouthdr
 140 {
 141   /* FIXME: The following entries are in AOUTHDR.  But they aren't
 142      available internally in bfd.  We add them here so that objdump
 143      can dump them.  */
 144   /* The state of the image file  */
 145   short Magic;
 146   /* Linker major version number */
 147   char MajorLinkerVersion;
 148   /* Linker minor version number  */
 149   char MinorLinkerVersion;
 150   /* Total size of all code sections  */
 151   long SizeOfCode;
 152   /* Total size of all initialized data sections  */
 153   long SizeOfInitializedData;
 154   /* Total size of all uninitialized data sections  */
 155   long SizeOfUninitializedData;
 156   /* Address of entry point relative to image base.  */
 157   bfd_vma AddressOfEntryPoint;
 158   /* Address of the first code section relative to image base.  */
 159   bfd_vma BaseOfCode;
 160   /* Address of the first data section relative to image base.  */
 161   bfd_vma BaseOfData;
 162
 163   /* PE stuff  */
 164   bfd_vma ImageBase;            /* address of specific location in memory that
 165                                    file is located, NT default 0x10000 */
 166
 167   bfd_vma SectionAlignment;     /* section alignment default 0x1000 */
 168   bfd_vma FileAlignment;        /* file alignment default 0x200 */
 169   short   MajorOperatingSystemVersion; /* minimum version of the operating */
 170   short   MinorOperatingSystemVersion; /* system req'd for exe, default to 1*/
 171   short   MajorImageVersion;    /* user defineable field to store version of */
 172   short   MinorImageVersion;    /* exe or dll being created, default to 0 */
 173   short   MajorSubsystemVersion; /* minimum subsystem version required to */
 174   short   MinorSubsystemVersion; /* run exe; default to 3.1 */
 175   long    Reserved1;            /* seems to be 0 */
 176   long    SizeOfImage;          /* size of memory to allocate for prog */
 177   long    SizeOfHeaders;        /* size of PE header and section table */
 178   long    CheckSum;             /* set to 0 */
 179   short   Subsystem;
 180
 181   /* type of subsystem exe uses for user interface,
 182      possible values:
 183      1 - NATIVE   Doesn't require a subsystem
 184      2 - WINDOWS_GUI runs in Windows GUI subsystem
 185      3 - WINDOWS_CUI runs in Windows char sub. (console app)
 186      5 - OS2_CUI runs in OS/2 character subsystem
 187      7 - POSIX_CUI runs in Posix character subsystem */
 188   short   DllCharacteristics;   /* flags for DLL init, use 0 */
 189   bfd_vma SizeOfStackReserve;   /* amount of memory to reserve  */
 190   bfd_vma SizeOfStackCommit;    /* amount of memory initially committed for
 191                                    initial thread's stack, default is 0x1000 */
 192   bfd_vma SizeOfHeapReserve;    /* amount of virtual memory to reserve and */
 193   bfd_vma SizeOfHeapCommit;     /* commit, don't know what to defaut it to */
 194   long    LoaderFlags;          /* can probably set to 0 */
 195   long    NumberOfRvaAndSizes;  /* number of entries in next entry, 16 */
 196   IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES];
 197 };
 198
 199 /********************** AOUT "OPTIONAL HEADER" **********************/
 200 struct internal_aouthdr
 201 {
 202   short magic;                  /* type of file                         */
 203   short vstamp;                 /* version stamp                        */
 204   bfd_vma tsize;                /* text size in bytes, padded to FW bdry*/
 205   bfd_vma dsize;                /* initialized data "  "                */
 206   bfd_vma bsize;                /* uninitialized data "   "             */
 207   bfd_vma entry;                /* entry pt.                            */
 208   bfd_vma text_start;           /* base of text used for this file */
 209   bfd_vma data_start;           /* base of data used for this file */
 210
 211   /* i960 stuff */
 212   unsigned long tagentries;     /* number of tag entries to follow */
 213
 214   /* RS/6000 stuff */
 215   bfd_vma o_toc;                /* address of TOC                       */
 216   short o_snentry;              /* section number for entry point */
 217   short o_sntext;               /* section number for text      */
 218   short o_sndata;               /* section number for data      */
 219   short o_sntoc;                /* section number for toc       */
 220   short o_snloader;             /* section number for loader section */
 221   short o_snbss;                /* section number for bss       */
 222   short o_algntext;             /* max alignment for text       */
 223   short o_algndata;             /* max alignment for data       */
 224   short o_modtype;              /* Module type field, 1R,RE,RO  */
 225   short o_cputype;              /* Encoded CPU type             */
 226   bfd_vma o_maxstack;   /* max stack size allowed.      */
 227   bfd_vma o_maxdata;    /* max data size allowed.       */
 228
 229   /* ECOFF stuff */
 230   bfd_vma bss_start;            /* Base of bss section.         */
 231   bfd_vma gp_value;             /* GP register value.           */
 232   unsigned long gprmask;        /* General registers used.      */
 233   unsigned long cprmask[4];     /* Coprocessor registers used.  */
 234   unsigned long fprmask;        /* Floating pointer registers used.  */
 235
 236   /* Apollo stuff */
 237   long o_inlib;                 /* inlib data */
 238   long o_sri;                   /* Static Resource Information */
 239   long vid[2];                  /* Version id */
 240
 241   struct internal_extra_pe_aouthdr pe;
 242 };
 243
 244 /********************** STORAGE CLASSES **********************/
 245
 246 /* This used to be defined as -1, but now n_sclass is unsigned.  */
 247 #define C_EFCN          0xff    /* physical end of function     */
 248 #define C_NULL          0
 249 #define C_AUTO          1       /* automatic variable           */
 250 #define C_EXT           2       /* external symbol              */
 251 #define C_STAT          3       /* static                       */
 252 #define C_REG           4       /* register variable            */
 253 #define C_EXTDEF        5       /* external definition          */
 254 #define C_LABEL         6       /* label                        */
 255 #define C_ULABEL        7       /* undefined label              */
 256 #define C_MOS           8       /* member of structure          */
 257 #define C_ARG           9       /* function argument            */
 258 #define C_STRTAG        10      /* structure tag                */
 259 #define C_MOU           11      /* member of union              */
 260 #define C_UNTAG         12      /* union tag                    */
 261 #define C_TPDEF         13      /* type definition              */
 262 #define C_USTATIC       14      /* undefined static             */
 263 #define C_ENTAG         15      /* enumeration tag              */
 264 #define C_MOE           16      /* member of enumeration        */
 265 #define C_REGPARM       17      /* register parameter           */
 266 #define C_FIELD         18      /* bit field                    */
 267 #define C_AUTOARG       19      /* auto argument                */
 268 #define C_LASTENT       20      /* dummy entry (end of block)   */
 269 #define C_BLOCK         100     /* ".bb" or ".eb"               */
 270 #define C_FCN           101     /* ".bf" or ".ef"               */
 271 #define C_EOS           102     /* end of structure             */
 272 #define C_FILE          103     /* file name                    */
 273 #define C_LINE          104     /* line # reformatted as symbol table entry */
 274 #define C_ALIAS         105     /* duplicate tag                */
 275 #define C_HIDDEN        106     /* ext symbol in dmert public lib */
 276
 277 #if defined _AIX52 || defined AIX_WEAK_SUPPORT
 278 #define C_WEAKEXT       111     /* weak symbol -- AIX standard.  */
 279 #else
 280 #define C_WEAKEXT       127     /* weak symbol -- GNU extension.  */
 281 #endif
 282
 283 /* New storage classes for TI COFF */
 284 #define C_UEXT          19      /* Tentative external definition */
 285 #define C_STATLAB       20      /* Static load time label */
 286 #define C_EXTLAB        21      /* External load time label */
 287 #define C_SYSTEM        23      /* System Wide variable */
 288
 289 /* New storage classes for WINDOWS_NT   */
 290 #define C_SECTION       104     /* section name */
 291 #define C_NT_WEAK       105     /* weak external */
 292
 293  /* New storage classes for 80960 */
 294
 295 /* C_LEAFPROC is obsolete.  Use C_LEAFEXT or C_LEAFSTAT */
 296 #define C_LEAFPROC      108     /* Leaf procedure, "call" via BAL */
 297
 298 #define C_SCALL         107     /* Procedure reachable via system call */
 299 #define C_LEAFEXT       108     /* External leaf */
 300 #define C_LEAFSTAT      113     /* Static leaf */
 301 #define C_OPTVAR        109     /* Optimized variable           */
 302 #define C_DEFINE        110     /* Preprocessor #define         */
 303 #define C_PRAGMA        111     /* Advice to compiler or linker */
 304 #define C_SEGMENT       112     /* 80960 segment name           */
 305
 306   /* Storage classes for m88k */
 307 #define C_SHADOW        107     /* shadow symbol                */
 308 #define C_VERSION       108     /* coff version symbol          */
 309
 310  /* New storage classes for RS/6000 */
 311 #define C_HIDEXT        107     /* Un-named external symbol */
 312 #define C_BINCL         108     /* Marks beginning of include file */
 313 #define C_EINCL         109     /* Marks ending of include file */
 314
 315  /* storage classes for stab symbols for RS/6000 */
 316 #define C_GSYM          (0x80)
 317 #define C_LSYM          (0x81)
 318 #define C_PSYM          (0x82)
 319 #define C_RSYM          (0x83)
 320 #define C_RPSYM         (0x84)
 321 #define C_STSYM         (0x85)
 322 #define C_TCSYM         (0x86)
 323 #define C_BCOMM         (0x87)
 324 #define C_ECOML         (0x88)
 325 #define C_ECOMM         (0x89)
 326 #define C_DECL          (0x8c)
 327 #define C_ENTRY         (0x8d)
 328 #define C_FUN           (0x8e)
 329 #define C_BSTAT         (0x8f)
 330 #define C_ESTAT         (0x90)
 331
 332 /* Storage classes for Thumb symbols */
 333 #define C_THUMBEXT      (128 + C_EXT)           /* 130 */
 334 #define C_THUMBSTAT     (128 + C_STAT)          /* 131 */
 335 #define C_THUMBLABEL    (128 + C_LABEL)         /* 134 */
 336 #define C_THUMBEXTFUNC  (C_THUMBEXT  + 20)      /* 150 */
 337 #define C_THUMBSTATFUNC (C_THUMBSTAT + 20)      /* 151 */
 338
 339 /********************** SECTION HEADER **********************/
 340
 341 #define SCNNMLEN (8)
 342
 343 struct internal_scnhdr
 344 {
 345   char s_name[SCNNMLEN];        /* section name                 */
 346
 347   /* Physical address, aliased s_nlib.
 348      In the pei format, this field is the virtual section size
 349      (the size of the section after being loaded int memory),
 350      NOT the physical address.  */
 351   bfd_vma s_paddr;
 352
 353   bfd_vma s_vaddr;              /* virtual address              */
 354   bfd_vma s_size;               /* section size                 */
 355   bfd_vma s_scnptr;             /* file ptr to raw data for section */
 356   bfd_vma s_relptr;             /* file ptr to relocation       */
 357   bfd_vma s_lnnoptr;            /* file ptr to line numbers     */
 358   unsigned long s_nreloc;       /* number of relocation entries */
 359   unsigned long s_nlnno;        /* number of line number entries*/
 360   long s_flags;                 /* flags                        */
 361   long s_align;                 /* used on I960                 */
 362   unsigned char s_page;         /* TI COFF load page            */
 363 };
 364
 365 /* s_flags "type".  */
 366 #define STYP_REG         (0x0000)       /* "regular": allocated, relocated, loaded */
 367 #define STYP_DSECT       (0x0001)       /* "dummy":  relocated only*/
 368 #define STYP_NOLOAD      (0x0002)       /* "noload": allocated, relocated, not loaded */
 369 #define STYP_GROUP       (0x0004)       /* "grouped": formed of input sections */
 370 #define STYP_PAD         (0x0008)       /* "padding": not allocated, not relocated, loaded */
 371 #define STYP_COPY        (0x0010)       /* "copy": for decision function used by field update;  not allocated, not relocated,
 372                                                                              loaded; reloc & lineno entries processed normally */
 373 #define STYP_TEXT        (0x0020)       /* section contains text only */
 374 #define S_SHRSEG         (0x0020)       /* In 3b Update files (output of ogen), sections which appear in SHARED segments of the Pfile
 375                                                                              will have the S_SHRSEG flag set by ogen, to inform dufr that updating 1 copy of the proc. will
 376                                                                              update all process invocations. */
 377 #define STYP_DATA        (0x0040)       /* section contains data only */
 378 #define STYP_BSS         (0x0080)       /* section contains bss only */
 379 #define S_NEWFCN         (0x0100)       /* In a minimal file or an update file, a new function (as compared with a replaced function) */
 380 #define STYP_INFO        (0x0200)       /* comment: not allocated not relocated, not loaded */
 381 #define STYP_OVER        (0x0400)       /* overlay: relocated not allocated or loaded */
 382 #define STYP_LIB         (0x0800)       /* for .lib: same as INFO */
 383 #define STYP_MERGE       (0x2000)       /* merge section -- combines with text, data or bss sections only */
 384 #define STYP_REVERSE_PAD (0x4000)       /* section will be padded with no-op instructions
 385                                            wherever padding is necessary and there is a
 386                                            word of contiguous bytes beginning on a word
 387                                            boundary. */
 388
 389 #define STYP_LIT        0x8020  /* Literal data (like STYP_TEXT) */
 390
 391
 392 /********************** LINE NUMBERS **********************/
 393
 394 /* 1 line number entry for every "breakpointable" source line in a section.
 395    Line numbers are grouped on a per function basis; first entry in a function
 396    grouping will have l_lnno = 0 and in place of physical address will be the
 397    symbol table index of the function name.  */
 398
 399 struct internal_lineno
 400 {
 401   union
 402   {
 403     bfd_signed_vma l_symndx;            /* function name symbol index, iff l_lnno == 0*/
 404     bfd_signed_vma l_paddr;             /* (physical) address of line number    */
 405   }     l_addr;
 406   unsigned long l_lnno;         /* line number          */
 407 };
 408
 409 /********************** SYMBOLS **********************/
 410
 411 #define SYMNMLEN        8       /* # characters in a symbol name        */
 412 #define FILNMLEN        14      /* # characters in a file name          */
 413 #define DIMNUM          4       /* # array dimensions in auxiliary entry */
 414
 415 struct internal_syment
 416 {
 417   union
 418   {
 419     char _n_name[SYMNMLEN];     /* old COFF version             */
 420     struct
 421     {
 422       bfd_hostptr_t _n_zeroes;  /* new == 0                     */
 423       bfd_hostptr_t _n_offset;  /* offset into string table     */
 424     }      _n_n;
 425     char *_n_nptr[2];           /* allows for overlaying        */
 426   }     _n;
 427   bfd_vma n_value;              /* value of symbol              */
 428   short n_scnum;                /* section number               */
 429   unsigned short n_flags;       /* copy of flags from filhdr    */
 430   unsigned short n_type;        /* type and derived type        */
 431   unsigned char n_sclass;       /* storage class                */
 432   unsigned char n_numaux;       /* number of aux. entries       */
 433 };
 434
 435 #define n_name          _n._n_name
 436 #define n_zeroes        _n._n_n._n_zeroes
 437 #define n_offset        _n._n_n._n_offset
 438
 439 /* Relocatable symbols have number of the section in which they are defined,
 440    or one of the following:  */
 441
 442 #define N_UNDEF ((short)0)      /* undefined symbol */
 443 #define N_ABS   ((short)-1)     /* value of symbol is absolute */
 444 #define N_DEBUG ((short)-2)     /* debugging symbol -- value is meaningless */
 445 #define N_TV    ((short)-3)     /* indicates symbol needs preload transfer vector */
 446 #define P_TV    ((short)-4)     /* indicates symbol needs postload transfer vector*/
 447
 448 /* Type of a symbol, in low N bits of the word.  */
 449
 450 #define T_NULL          0
 451 #define T_VOID          1       /* function argument (only used by compiler) */
 452 #define T_CHAR          2       /* character            */
 453 #define T_SHORT         3       /* short integer        */
 454 #define T_INT           4       /* integer              */
 455 #define T_LONG          5       /* long integer         */
 456 #define T_FLOAT         6       /* floating point       */
 457 #define T_DOUBLE        7       /* double word          */
 458 #define T_STRUCT        8       /* structure            */
 459 #define T_UNION         9       /* union                */
 460 #define T_ENUM          10      /* enumeration          */
 461 #define T_MOE           11      /* member of enumeration*/
 462 #define T_UCHAR         12      /* unsigned character   */
 463 #define T_USHORT        13      /* unsigned short       */
 464 #define T_UINT          14      /* unsigned integer     */
 465 #define T_ULONG         15      /* unsigned long        */
 466 #define T_LNGDBL        16      /* long double          */
 467
 468 /* Derived types, in n_type.  */
 469
 470 #define DT_NON          (0)     /* no derived type */
 471 #define DT_PTR          (1)     /* pointer */
 472 #define DT_FCN          (2)     /* function */
 473 #define DT_ARY          (3)     /* array */
 474
 475 #define BTYPE(x)        ((x) & N_BTMASK)
 476 #define DTYPE(x)        (((x) & N_TMASK) >> N_BTSHFT)
 477
 478 #define ISPTR(x) \
 479   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_PTR << N_BTSHFT))
 480 #define ISFCN(x) \
 481   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_FCN << N_BTSHFT))
 482 #define ISARY(x) \
 483   (((unsigned long) (x) & N_TMASK) == ((unsigned long) DT_ARY << N_BTSHFT))
 484 #define ISTAG(x) \
 485   ((x) == C_STRTAG || (x) == C_UNTAG || (x) == C_ENTAG)
 486 #define DECREF(x) \
 487   ((((x) >> N_TSHIFT) & ~ N_BTMASK) | ((x) & N_BTMASK))
 488
 489 union internal_auxent
 490 {
 491   struct
 492   {
 493
 494     union
 495     {
 496       long l;                   /* str, un, or enum tag indx */
 497       struct coff_ptr_struct *p;
 498     }     x_tagndx;
 499
 500     union
 501     {
 502       struct
 503       {
 504         unsigned short x_lnno;  /* declaration line number */
 505         unsigned short x_size;  /* str/union/array size */
 506       }      x_lnsz;
 507       long x_fsize;             /* size of function */
 508     }     x_misc;
 509
 510     union
 511     {
 512       struct
 513       {                         /* if ISFCN, tag, or .bb */
 514         bfd_signed_vma x_lnnoptr;               /* ptr to fcn line # */
 515         union
 516         {                       /* entry ndx past block end */
 517           long l;
 518           struct coff_ptr_struct *p;
 519         }     x_endndx;
 520       }      x_fcn;
 521
 522       struct
 523       {                         /* if ISARY, up to 4 dimen. */
 524         unsigned short x_dimen[DIMNUM];
 525       }      x_ary;
 526     }     x_fcnary;
 527
 528     unsigned short x_tvndx;     /* tv index */
 529   }      x_sym;
 530
 531   union
 532   {
 533     char x_fname[FILNMLEN];
 534     struct
 535     {
 536       long x_zeroes;
 537       long x_offset;
 538     }      x_n;
 539   }     x_file;
 540
 541   struct
 542   {
 543     long x_scnlen;              /* section length */
 544     unsigned short x_nreloc;    /* # relocation entries */
 545     unsigned short x_nlinno;    /* # line numbers */
 546     unsigned long x_checksum;   /* section COMDAT checksum for PE */
 547     unsigned short x_associated; /* COMDAT associated section index for PE */
 548     unsigned char x_comdat;     /* COMDAT selection number for PE */
 549   }      x_scn;
 550
 551   struct
 552   {
 553     long x_tvfill;              /* tv fill value */
 554     unsigned short x_tvlen;     /* length of .tv */
 555     unsigned short x_tvran[2];  /* tv range */
 556   }      x_tv;                  /* info about .tv section (in auxent of symbol .tv)) */
 557
 558   /******************************************
 559    * RS/6000-specific auxent - last auxent for every external symbol
 560    ******************************************/
 561   struct
 562   {
 563     union
 564       {                         /* csect length or enclosing csect */
 565         bfd_signed_vma l;
 566         struct coff_ptr_struct *p;
 567       } x_scnlen;
 568     long x_parmhash;            /* parm type hash index */
 569     unsigned short x_snhash;    /* sect num with parm hash */
 570     unsigned char x_smtyp;      /* symbol align and type */
 571     /* 0-4 - Log 2 of alignment */
 572     /* 5-7 - symbol type */
 573     unsigned char x_smclas;     /* storage mapping class */
 574     long x_stab;                /* dbx stab info index */
 575     unsigned short x_snstab;    /* sect num with dbx stab */
 576   }      x_csect;               /* csect definition information */
 577
 578 /* x_smtyp values:  */
 579
 580 #define SMTYP_ALIGN(x)  ((x) >> 3)      /* log2 of alignment */
 581 #define SMTYP_SMTYP(x)  ((x) & 0x7)     /* symbol type */
 582 /* Symbol type values:  */
 583 #define XTY_ER  0               /* External reference */
 584 #define XTY_SD  1               /* Csect definition */
 585 #define XTY_LD  2               /* Label definition */
 586 #define XTY_CM  3               /* .BSS */
 587 #define XTY_EM  4               /* Error message */
 588 #define XTY_US  5               /* "Reserved for internal use" */
 589
 590 /* x_smclas values:  */
 591
 592 #define XMC_PR  0               /* Read-only program code */
 593 #define XMC_RO  1               /* Read-only constant */
 594 #define XMC_DB  2               /* Read-only debug dictionary table */
 595 #define XMC_TC  3               /* Read-write general TOC entry */
 596 #define XMC_UA  4               /* Read-write unclassified */
 597 #define XMC_RW  5               /* Read-write data */
 598 #define XMC_GL  6               /* Read-only global linkage */
 599 #define XMC_XO  7               /* Read-only extended operation */
 600 #define XMC_SV  8               /* Read-only supervisor call */
 601 #define XMC_BS  9               /* Read-write BSS */
 602 #define XMC_DS  10              /* Read-write descriptor csect */
 603 #define XMC_UC  11              /* Read-write unnamed Fortran common */
 604 #define XMC_TI  12              /* Read-only traceback index csect */
 605 #define XMC_TB  13              /* Read-only traceback table csect */
 606 /*              14      ??? */
 607 #define XMC_TC0 15              /* Read-write TOC anchor */
 608 #define XMC_TD  16              /* Read-write data in TOC */
 609
 610   /******************************************
 611    *  I960-specific *2nd* aux. entry formats
 612    ******************************************/
 613   struct
 614   {
 615     /* This is a very old typo that keeps getting propagated. */
 616 #define x_stdindx x_stindx
 617     long x_stindx;              /* sys. table entry */
 618   }      x_sc;                  /* system call entry */
 619
 620   struct
 621   {
 622     unsigned long x_balntry;    /* BAL entry point */
 623   }      x_bal;                 /* BAL-callable function */
 624
 625   struct
 626   {
 627     unsigned long x_timestamp;  /* time stamp */
 628     char x_idstring[20];        /* producer identity string */
 629   }      x_ident;               /* Producer ident info */
 630
 631 };
 632
 633 /********************** RELOCATION DIRECTIVES **********************/
 634
 635 struct internal_reloc
 636 {
 637   bfd_vma r_vaddr;              /* Virtual address of reference */
 638   long r_symndx;                /* Index into symbol table      */
 639   unsigned short r_type;        /* Relocation type              */
 640   unsigned char r_size;         /* Used by RS/6000 and ECOFF    */
 641   unsigned char r_extern;       /* Used by ECOFF                */
 642   unsigned long r_offset;       /* Used by Alpha ECOFF, SPARC, others */
 643 };
 644
 645 /* X86-64 relocations.  */
 646 #define R_AMD64_ABS              0 /* Reference is absolute, no relocation is necessary.  */
 647 #define R_AMD64_DIR64            1 /* 64-bit address (VA).  */
 648 #define R_AMD64_DIR32            2 /* 32-bit address (VA) R_DIR32.  */
 649 #define R_AMD64_IMAGEBASE        3 /* 32-bit absolute ref w/o base R_IMAGEBASE.  */
 650 #define R_AMD64_PCRLONG          4 /* 32-bit relative address from byte following reloc R_PCRLONG.  */
 651 #define R_AMD64_PCRLONG_1        5 /* 32-bit relative address from byte distance 1 from reloc.  */
 652 #define R_AMD64_PCRLONG_2        6 /* 32-bit relative address from byte distance 2 from reloc.  */
 653 #define R_AMD64_PCRLONG_3        7 /* 32-bit relative address from byte distance 3 from reloc.  */
 654 #define R_AMD64_PCRLONG_4        8 /* 32-bit relative address from byte distance 4 from reloc.  */
 655 #define R_AMD64_PCRLONG_5        9 /* 32-bit relative address from byte distance 5 from reloc.  */
 656 #define R_AMD64_SECTION         10 /* Section index.  */
 657 #define R_AMD64_SECREL          11 /* 32 bit offset from base of section containing target R_SECREL.  */
 658 #define R_AMD64_SECREL7         12 /* 7 bit unsigned offset from base of section containing target.  */
 659 #define R_AMD64_TOKEN           13 /* 32 bit metadata token.  */
 660 #define R_AMD64_PCRQUAD         14 /* Pseude PC64 relocation - Note: not specified by MS/AMD but need for gas pc-relative 64bit wide relocation generated by ELF.  */
 661
 662 /* i386 Relocations.  */
 663
 664 #define R_DIR16          1
 665 #define R_REL24          5
 666 #define R_DIR32          6
 667 #define R_IMAGEBASE      7
 668 #define R_SECREL32      11
 669 #define R_RELBYTE       15
 670 #define R_RELWORD       16
 671 #define R_RELLONG       17
 672 #define R_PCRBYTE       18
 673 #define R_PCRWORD       19
 674 #define R_PCRLONG       20
 675 #define R_PCR24         21
 676 #define R_IPRSHORT      24
 677 #define R_IPRLONG       26
 678 #define R_GETSEG        29
 679 #define R_GETPA         30
 680 #define R_TAGWORD       31
 681 #define R_JUMPTARG      32      /* strange 29k 00xx00xx reloc */
 682 #define R_PARTLS16      32
 683 #define R_PARTMS8       33
 684
 685 #define R_PCR16L       128
 686 #define R_PCR26L       129
 687 #define R_VRT16        130
 688 #define R_HVRT16       131
 689 #define R_LVRT16       132
 690 #define R_VRT32        133
 691
 692
 693 /* This reloc identifies mov.b instructions with a 16bit absolute
 694    address.  The linker tries to turn insns with this reloc into
 695    an absolute 8-bit address.  */
 696 #define R_MOV16B1       0x41
 697
 698 /* This reloc identifies mov.b instructions which had a 16bit
 699    absolute address which have been shortened into a 8-bit
 700    absolute address.  */
 701 #define R_MOV16B2       0x42
 702
 703 /* This reloc identifies jmp insns with a 16bit target address;
 704    the linker tries to turn these insns into bra insns with
 705    an 8bit pc-relative target.  */
 706 #define R_JMP1          0x43
 707
 708 /* This reloc identifies a bra with an 8-bit pc-relative
 709    target that was formerly a jmp insn with a 16bit target.  */
 710 #define R_JMP2          0x44
 711
 712 /* ??? */
 713 #define R_RELLONG_NEG   0x45
 714
 715 /* This reloc identifies jmp insns with a 24bit target address;
 716    the linker tries to turn these insns into bra insns with
 717    an 8bit pc-relative target.  */
 718 #define R_JMPL1         0x46
 719
 720 /* This reloc identifies a bra with an 8-bit pc-relative
 721    target that was formerly a jmp insn with a 24bit target.  */
 722 #define R_JMPL2         0x47
 723
 724 /* This reloc identifies mov.b instructions with a 24bit absolute
 725    address.  The linker tries to turn insns with this reloc into
 726    an absolute 8-bit address.  */
 727
 728 #define R_MOV24B1       0x48
 729
 730 /* This reloc identifies mov.b instructions which had a 24bit
 731    absolute address which have been shortened into a 8-bit
 732    absolute address.  */
 733 #define R_MOV24B2       0x49
 734
 735 /* An h8300 memory indirect jump/call.  Forces the address of the jump/call
 736    target into the function vector (in page zero), and the address of the
 737    vector entry to be placed in the jump/call instruction.  */
 738 #define R_MEM_INDIRECT  0x4a
 739
 740 /* This reloc identifies a 16bit pc-relative branch target which was
 741    shortened into an 8bit pc-relative branch target.  */
 742 #define R_PCRWORD_B     0x4b
 743
 744 /* This reloc identifies mov.[wl] instructions with a 32/24 bit
 745    absolute address; the linker may turn this into a mov.[wl]
 746    insn with a 16bit absolute address.  */
 747 #define R_MOVL1         0x4c
 748
 749 /* This reloc identifies mov.[wl] insns which formerly had
 750    a 32/24bit absolute address and now have a 16bit absolute address.  */
 751 #define R_MOVL2         0x4d
 752
 753 /* This reloc identifies a bCC:8 which will have it's condition
 754    inverted and its target redirected to the target of the branch
 755    in the following insn.  */
 756 #define R_BCC_INV       0x4e
 757
 758 /* This reloc identifies a jmp instruction that has been deleted.  */
 759 #define R_JMP_DEL       0x4f
 760
 761 /* Z8k modes */
 762 #define R_IMM16   0x01          /* 16 bit abs */
 763 #define R_JR      0x02          /* jr  8 bit disp */
 764 #define R_IMM4L   0x23          /* low nibble */
 765 #define R_IMM8    0x22          /* 8 bit abs */
 766 #define R_IMM32   R_RELLONG     /* 32 bit abs */
 767 #define R_CALL    R_DA          /* Absolute address which could be a callr */
 768 #define R_JP      R_DA          /* Absolute address which could be a jp */
 769 #define R_REL16   0x04          /* 16 bit PC rel */
 770 #define R_CALLR   0x05          /* callr 12 bit disp */
 771 #define R_SEG     0x10          /* set if in segmented mode */
 772 #define R_IMM4H   0x24          /* high nibble */
 773 #define R_DISP7   0x25          /* djnz displacement */
 774
 775 /* Z80 modes */
 776 #define R_OFF8    0x32          /* 8 bit signed abs, for (i[xy]+d) */
 777 #define R_IMM24   0x33          /* 24 bit abs */
 778 /* R_JR, R_IMM8, R_IMM16, R_IMM32 - as for Z8k */
 779
 780 /* H8500 modes */
 781
 782 #define R_H8500_IMM8    1               /*  8 bit immediate     */
 783 #define R_H8500_IMM16   2               /* 16 bit immediate     */
 784 #define R_H8500_PCREL8  3               /*  8 bit pcrel         */
 785 #define R_H8500_PCREL16 4               /* 16 bit pcrel         */
 786 #define R_H8500_HIGH8   5               /* high 8 bits of 24 bit address */
 787 #define R_H8500_LOW16   7               /* low 16 bits of 24 bit immediate */
 788 #define R_H8500_IMM24   6               /* 24 bit immediate */
 789 #define R_H8500_IMM32   8               /* 32 bit immediate */
 790 #define R_H8500_HIGH16  9               /* high 16 bits of 32 bit immediate */
 791
 792 /* W65 modes */
 793
 794 #define R_W65_ABS8      1  /* addr & 0xff               */
 795 #define R_W65_ABS16     2  /* addr & 0xffff             */
 796 #define R_W65_ABS24     3  /* addr & 0xffffff           */
 797
 798 #define R_W65_ABS8S8    4  /* (addr >> 8) & 0xff        */
 799 #define R_W65_ABS8S16   5  /* (addr >> 16) & 0xff       */
 800
 801 #define R_W65_ABS16S8   6  /* (addr >> 8) & 0ffff       */
 802 #define R_W65_ABS16S16  7  /* (addr >> 16) & 0ffff      */
 803
 804 #define R_W65_PCR8      8
 805 #define R_W65_PCR16     9
 806
 807 #define R_W65_DP       10  /* direct page 8 bits only   */
 808
 809 #endif /* GNU_COFF_INTERNAL_H */